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93 vs 91 is within the realm of what the factory software (or any decent 3rd party flash) should be able to adjust to automatically. I presume the "minimum" for the car is listed at 91, but the stock tune should squeeze out a few more HP/tq on 93, sure... but it's gonna be like 10-20 at most I'd guess.
All of that extra work to get the fuel load correct all the time, with the potential for grenading the motor if you screw it up (assuming the tune is extra aggressive and meant to run only on 93)... doesn't seem worth it to me.
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2004 Matrix XRS 6MT => 2008 VW R32 DSG => 2012 Audi TTRS 6MT => 2018 BMW ///M2 6MT
I'm an IT guy by trade and tech nerd by choice. 
I like HPDEs, parts of US Hwy 129, NC 28, and the Cherohala Skyway.
I'm also a fan of aural pleasure.  |